BUSIform
Filing Addresses for State of Oklahoma
Federal
Busiform Envelope
Envelope Size
State
Busiform Envelope
Returns with Refunds or No Payment Department of the Treasury
Internal Revenue Service
Fresno, CA 93888-0002
EF10-5
EF69-5
EF912-5
#10½
6 x 9
9 x 12
Oklahoma Tax Commission
PO Box 26800
Oklahoma City, OK 73126-0800
EOK1-B
EOK6-B
EOK9-B
Returns with Balance Due Internal Revenue Service
PO Box 802501
Cincinnati, OH 45280-2501
EV10-C2
EV69-C2
EV912-C2
#10½
6 x 9
9 x 12
Estimated Payments Internal Revenue Service
PO Box 802502
Cincinnati, OH 45280-2502
ES09-C2
#9
Oklahoma Tax Commission
PO Box 26930
Oklahoma City, OK 73126-0930
EOK9-ES
Corporations, Partnerships, etc Department of the Treasury
Internal Revenue Service
Odgen, UT 84201-0012
EF10-9
EF69-9
EF912-9
#10½
6 x 9
9 x 12

Note: Addresses above reflect latest information we have available, but are subject to change. If you have more up-to-date information, please Thank you.